... is correct, that affects precision, life, performance. And fill the bearing with lubricant after installation.2. Don ... should not be ultra cooled.Specification of cylindrical roller bearings: ItemSpecificationsModelAll 19 seriesMaterialChrome Steel, Carbon Steel, Stainless steelBore ... ,NACHI,HRB,LYC,THKComplete process for the production and quality assurance ensures our products can meet your ...